The unique contribution of Bible exposition is its substantial enhancement of the listeners' comprehension of Scripture's intent. Those who listen to expository preaching have opportunity to submit to the Holy Spirit who first inspired the text as He now illumines that text to them. This is the best avenue for building up the saints. The New Testament puts heavy emphasis on using the mind as the principal avenue to Christian growth (for example, Rom. 12:2; 1 Pet. 1:13), so the preacher should do the same.